We have a warehouse and marketing company in Chicago, USA, Vortex Diamond Inc., can make the next day shipping to the US and Canada customers, which also helps us accumulated great expericence on the products performance, meanwhile, it improved our design, technology and production ability at the same time. SinoDiam focusing on the concrete and asphalt market over ten years, supplying the diamond grinding blades, road milling bits, diamond cutting blade, diamond coring bits, diamond wiring, diamond grinding and polishing products to the worldwide customers. Our precission prodcution, consistency quality, experienced sales team expecting your business oppotunity. Thank you for having us